DOVER — A fire early Tuesday morning left a pizza restaurant with significant smoke damage.

According to Assistant Fire Chief Jim Ormond, firefighters from Dover and Somersworth arrived on scene at Roger’s Pizza, located at 869 Central Ave., shortly before 1:30 a.m. after a worker doing maintenance on the ovens sparked a fire when using a lighter to check the exhaust system.

Ormond said the worker fought the fire with an extinguisher and then called 9-1-1. The sprinkler system activated, which contained the fire until crews arrived.